JPS59109247U - fan motor - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来構造説明図でａは断面図、ｂはそのカップ
状ケース外周部の拡大図、Ｃは同じくエンドブラケット
内径部の拡大図、第２図は本考案の実施例図で３は断面
図、ｂはｘ−ｘ’力方向ら見た側面図、Ｃはくぼみ部の
上面図である。Fig. 1 is an explanatory view of the conventional structure; a is a sectional view, b is an enlarged view of the outer circumference of the cup-shaped case, C is an enlarged view of the inner diameter of the end bracket, and Fig. 2 is an embodiment of the present invention. A sectional view, b is a side view seen from the x-x' force direction, and C is a top view of the recessed portion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 板金製のカップ状ケースと、このケースの内周面に固着
された永久磁石製の回転子本体と、上記ケースの底面中
心部にカップ内側に突出するように固定状に取付けられ
る回転子軸とで構成される回転子を有し、複数枚のプロ
ペラが外周部に植設された合成樹脂製のプロペラ取付ハ
ブのエンドブラケットの内径面を上記カップ状ケースの
底面に近い外周面部に超音波振動により溶着してプロペ
ラと回転子とを一体回転体とする構造のファンモータに
おいて、前記エンドブラケットが溶着される前記カップ
状ケアー多の底面に近い外周部に複数個のくぼみを、前
記ケース板金の厚みより深い深さとエンドブラケットの
内径部の軸方向長さより僅かに長い軸方向長さとを持っ
て内側に突出するように設け、これらのくぼみの軸方向
長さの途中位置の円周方向に沿ってケース板金の厚みよ
りは浅い深さを持つ溝を堀ってプロペラ取付ハブのカッ
プ状ケースからの抜は止めとしたことを特徴とするファ
ンモータ。A cup-shaped case made of sheet metal, a rotor body made of a permanent magnet fixed to the inner peripheral surface of the case, and a rotor shaft fixedly attached to the center of the bottom of the case so as to protrude inside the cup. Ultrasonic vibration is applied to the inner diameter surface of the end bracket of the synthetic resin propeller mounting hub, which has a rotor consisting of In a fan motor having a structure in which a propeller and a rotor are welded together to form an integral rotating body, a plurality of depressions are formed in the outer periphery of the cup-shaped care plate near the bottom surface to which the end bracket is welded. These recesses are provided so as to protrude inward with a depth deeper than the thickness and an axial length slightly longer than the axial length of the inner diameter portion of the end bracket, and along the circumferential direction at a midpoint of the axial length of these recesses. A fan motor characterized in that a groove having a depth shallower than the thickness of a case sheet metal is dug to prevent a propeller mounting hub from being removed from a cup-shaped case.